Heating apparatus



May 9, 1933. E c. KLINE HEATING APPARATUS 2 Sheets-Sheet l Filed March 3, 1930 May 9, 1933. E. c. LINE 1,908,025

HEATING APPARATUS Filed March 3, 1930 2 sheets-sheet 2 Ma/0%? 730 Z/ w Patented May 9, 1933i PATENTl FFICE EDWARD C. KLINE, OF STREATOR, ILLINOS HEATING APPARATUS Application filed March This invention relates to` heating apparatus or devices, and particularly to apparatus of the type designed for imparting heat to a fluid such, for example, as Water, while the tluid is being circulated through the device, after which the luid or steam obtained trom the heated fluid maybe employed for heating purposes, as desired.

More specifically, the present invention relates to heating apparatus having a down draft, and, among other object-sis intended to provide a construction and arrangement whereby suitable draft `may be obtained to insure proper combustion of the fuel Vemr ployed in operating the device, and to insure etlicient circulation of the products of combustion in a manner to obtain the maximum of etliciency in the transfer of heat units to the fluid circulating through the apparatus.

Frequently, considerable damage has been done by confiagrations resulting from overheated stacks or chimneys due to excessive tiring in extremely cold weather, and it is, therefore, an object et the present invention to provide a device so constructed and arranged as to remove a very large proportion of the heat units trom the gases of combustion before they enter the stack, thereby insuring a relatively cool stack and utilizing the heat units to obtain the maximum heating eihcieucy oi the apparatus.

Another object of the invention is to provide suitable means for retaining the heat of combustion within the apparatus to insure a proper dra-tt when periodically starting a burner, such as an oil burner, or the like, which may be automatically controlled.

Another object oi' the invention is to provide a heat retaining `wall or partition of substantial proportions which is capable of furnishing hot dry air to the smoke iues over an appreciable period of time, thereby counteracting the chilling or cooling and dampening effect ot the water on the flue spaces of the apparatus, and providing hot dry air to insure perfect draft tor combustion and the circulation et the gases of combustion through the ilues of the device.

Another object of the invention is to accelerate circulation of the tluid,such as water 1930. Serial No. 432,2736.

through the device, and to apply a high degree or heat to the fluid just prior to its leaving the apparatus.

A further object of the invention is to provide a device ot the character described wherein the fluid employed is circulated through the device in the opposite direction to that in which the products of combustion are circulated.

A still further object of the invention is to improve devices of the character described in sundry details hereinafter referred to and particularly pointed out in the appended claims.

@ne embodiment of the present invention is shown tor illustrative purposes in the accompanying drawings in which Fig. l is a longitudinal sectional elevational view through a heating apparatus illustrating an embodiment of the presentinil vention and taken substantially as indicated by the linesl-l in Figs. 2 and 3;

Fig. 2 is a transverse sectional vievv taken substantially as indicated by the line 2-2 of Fig. l; and 75 Fig. 3 is a sectional elevational view taken substantially as indicated by 'the line 2%3 of Fig. l.

In the illustrative embodiment of the invention shown in the drawings, the apparatus, designated as a whole by the numeral 5 comprises a setting G of brick or other suitable material having end walls 7 and 8, side Walls 9 and l() and a top portion 1l.

Suitably positioned within tne interior of 30 the setting preferably intermediate the end walls i and 8, and extending transversely of the setting between the side walls 9 and l() is a heat absorbing partition wall l2 of substantial heavy construction and formed preferably ot lire brick or other suitable slowcooling material capable of holding and slowly emitting heat over a comparatively long period ot time. The partition wall, it will be noted, divides the interior of the setting into a plurality of compartments as, tor eX- ample, a combustionchamber 13 on one side ot the wall, and a heating chamber le on the other, the combustion chamber 13 being adapted to receive any suitable or desired 100 fuel as, for example, oil, or the like, and in the present instance, the illustrative embodiment is shown vas provided with a nozzle 15 extending through a door 16, or the lilre, suitably mounted in the wall 3 of the setting by which a liquid fuel may be injected into the combustion chamber.

1t will be noted that the upper end V17 of the partition wall l2 terminates a substantial distance below the top portion of the setting. thereby providing a passage 13 by which communication is established between the combustion chamber 13 and heating chamber 14 adjacent the upper portions of said chambers.

Suitably mounted in the heating chamber 14 are a plurality of serios of hollow water baffles 19, 20, 21, 22 and 23 spaced apart from each other and positioned in the heating chamber of the setting in staggered relationship with respect to each other, the endsv of alternate baffles being positioned adjacent one of the end walls of the setting and the partition wall 12, certain of said baffles torminating short of the partition wall 12, and other of. said baflles terminating short of said end wall in a manner to form a circuitous passage or flue space through the heating chamber for conducting the gases of combustion from the combustion chamber 13 to a stach or chimney connection 24 shown, in the present instance, as positioned in the end wall 7 and communicating with the lower or discharge endA of the circuitous passage or flue space formed by the water baffles in the heating chamber 14. f

In the present construction illustrated in I the drawings, the rear end portions of the baffles 19, 21 and 23 are positioned adjacent the rear wall 'Il' of the setting and the opposite or front end of the baffles 19 and 21 terminate a substantial distance short of the partition wall 12, While the forward end of the baflles 20 and 22 are positioned adjacent the partition wall 12 and the opposite or rear ends of the baffles 2O and 22 terminate a substantial distance short of the wall 7, thereby causing the gases of combustion in their passage from thefcombustion chamber 13 to the stack connection 24, to follow a course along the upper and lower sides of the baffles 19, 20, 21 and 22 and along the lower side of the baille 23 in the direction and as indicated l y the arrows in Fig. l.

lt will be noted that the baffle 23 is of somewhat greater length than the baffles 19 20, 21 and 22, and extends through the com municating passage 13 into the combustion chamber 13, preferably adjacent the upper end thereof, and is provided with an outlet pipe 25 by which the heating Huid is conducted to coils or other suitable heat radiating devices (not shown) as may be desiree Suitably connected to one end of thelowermost baffle 19, preferably adjacent the stack connection 24 at the discharge end of the circuitous passage formed in the heating chamber, is an inlet or return pipe 26 by which the fluid, after passing through the heat radiating ydevices is returned to the apparatus and again circulated through the baliies in a manner to absorb the heat from the gases of combustion passing through the heating chamber. V

F or establishing free and unrestricted communication between adjacent baffles, a plurality of fluid conducting nipples 27, 28, 29 and 30 are provided, the said nipples being adapted to register with apertures 31 formed in the upper and' lower walls of adjacent bales and having an area substantially equal to the cross sectional area of the nipples. These nipples not only serve to conduct the fluid from one baille to another, but serve also to space the adjacent end portions of the baffles with respect to each other.

For spacing the baffles at their opposite end portions from the nipples 27, 28, 29 and 30, a plurality of fluid conducting spacers or nipples32, 33, 34 and 35 are provided, having means associated therewith in the form of relatively small apertures 36 formed in adjacent balhes and adapted to register with the opening in the nipples 32, 33, 34 and 35 in a manner to permit a restricted flow of fluid through the fluid conducting spacers or nipples. Y

In the circulation of the'fluid through the apparatus, a relatively small portion of the fluid will pass through the spacing nipples 32, 33, 34 and 35 by reason of the relatively small apertures 36 communicating therewith, thereby avoiding the excessive heating and burning out of the spacers, and assisting, by reason of the excessive heat absorbed in the relatively slow passage of the fluid through the spacing nipples, in accelerating the liow of fluid through the device.

It will be observed from the foregoing description that in the present arrangement, the products'of combustion are discharged from the combustion chamber 13 adjacent the upper portion thereof through the communicating passage 18' and pass in a downward direction through a circuitous passage formed in the heating chamber 14, and are conducted to the .stack connection 24 adja- 'cent the lower portion of the heating chamber, vwhile the fluid in its passage from the intake pipe 26 follows a circuitous course upwardly through the baffles and connecting nipples to the discharge or outlet pipe 25 adjacent the upper end of the combustion chamber 13. Thus, it will be observed that a maximum of heat units are transferred to the fluid from the gases of combustion in their passage through the heating chamber and the gases are thereby more or less cooled,

and that by reason of the return pipe 26, car-V j rying relatively cooler fluid, being positioned adjacent the stack connection 24, the gases of combustion are further cooled before entering the chimney or stack, thereby insuring a relatively cool stack and eliminating the possibility of fire from an overheated stach due to excessive firing of the apparatus.

It will be observed also that the flow of fluid through the hollow baflies is materially accelerate-d, not only by the high degree of heat absorbed by the slow passage of fluid through the spacing nipples, but also by reason of applying` a high degree of heat from the gases of combustion to the fluid adjacent the upper portion of the combustion chamber 13 and just before the fluid leaves the apparatus for passage to the coils or other heat radiating devices, the application of the high degree of heat at this point producing rapid acceleration of the fluid and providing the fluid with a maximum degree of heat units to be radiated by the coils or other heat radiating devices.

In the illustrative embodiment, the partition wall l2 being of thick, heavy construction and being form-ed of suitable heat absorbing material serves to keep the air in the fine spaces of the heating chamber warm and dry when the fire in the combustion chamber is periodically extinguished or low as in the use of liquid fuel, thereby maintaining a condition in the heating chamber and flue .spaces whereby suitable draft therein assured whenever the fuel is again ignited in the combustion chamber.

It will be observed from the foregoing description that the present invention provides a heating apparatus of high thermal efficiency, capable of transferring a large number of heat units to a large quantity of fluid passing therethrough, and in which the flow of duid through the device is materially accelerated: furthermore, that suitable draft through the apparatus is provided by the retention of heat within the setting, and maintaining the air in the heating chamber and flue spaces in a dry condition.

It will also be observed that the present invention provides a device wherein a very large proportion of the heat units are removed from the gases of combustion before they en ter the stack or chimney, thereby insuring a relatively cool stack, reducing the fire hazard to a minimum, and eliminating possible damage by reason of overheating.

Obviously, the present invention is not limited to the precise construction and arrangement shown and described as the same may be variously modified. Moreover, all the features of the invention need not b-e used conjointly as the same may be used to advantage in variously different combinations and sub-combinations.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a heating apparatus, the combination of a setting, a solid heat absorbing partition wall positioned therein in a manner to form a combustion chamber and a heating chamber in said setting and terminating below the upper portion thereof in a manner to provide a communicating passage between said chainbers adjacent their upper end portions, a plurality of hollow fiuid conducting baffles positioned in said heating chamber and forming a circuitous passage therein communicatingwith the passage between said chambers, and a stack connection communicating with said circuitous passage at a point remote from said communicating passage.

i2. In a heating apparatus, the combination of a setting, a solid thich heat absorbing slow cooling partition wall positioned therein in a manner to form a combustion chamber and a heating` chamber in said setting and terminating below the upper portion thereof in a manner to provide a communicating passage between said chambers adjacent their upper end portions, a plurality of hollow fluid conducting baffles positioned in said heating chamber and forming a circuitous passage ther-ein communicating at one end with the passage between said chambers, and a stack connection positioned adjacent the lower portion of said setting and communicating with the opposite end of said circuitous passage.

8. In a heating apparatus, the combination of a setting, a stack connection adjacent the lower portion thereof, a solid heat absorbing partition wall positioned in said setting in a manner to form a combustion chamber and a heating chamber therein and terminating below the upper portion of the setting in a manner to provide a communicating passage between said chambers adjacent their upper end portions, a plurality of hollow fluid conducting baffles positioned in said heating chamber in staggered overlapping relationship with respect to each other in a manner to form a circuitous passage communicating at one of its end portions with the passage between said chambers and at its opposite end portion with said stack connection for conducting the gases of combustion in a downward direction through the heating chamber, a fluid inlet pipe communicating with the lowermost baiiie in said heating chamber, and an outlet pipe communicating with the uppermost baffle.

4. In a heating apparatus, the combination of a set-ting, a stack connection adjacent the lower portion thereof, a solid heat retaining partition wall positioned in said setting in a manner to form a combustion chamber and a heating chamber therein and terminating below the upper portion of the setting in a manner to provide a communicating passage between said chambers adjacent their upper cent the lower end oi said circuitous passage, and an outlet pipe communicating with the uppermost bailie above the upper portion of said combustion chamber.

5.; In a heating apparatus, the combination of a setting, a stack connection acent the lower portion thereof, a heat retaining partition wall positioned in said setting in a man- Vner to form la combustion chamber and a heating chamber therein and terminating below the upper portion ot' the setting in a manner to provide a communicating passage between said chambers adjacent their upper end portions, a series of hollow communicating fluid conducting baliles positioned in said heating chamber in staggered overlapping relationship with respect to each other in a manner to form a circuitous passage communicating at its upper end portion with the passage between said chambers and at its lower end portion with said stack connection for conducting the gases or" cornbustion in a downward direction through the heating chamber, the uppermost battle of said series extending into said combustion chainber, a uid inlet pipe communicating with the lowermost hollow baille in said heating chamber adjacent said stack connection, and an outlet pipe communicating with the por* tion of the uppermost bate positioned in said combustion chamber.

6. In a heating apparatus, the combination of a setting, a stack connection adjacent the lower portion thereof, a heat retaining parti tion wall positioned in said setting in a manner to form a combustion chamber and a heating chamber `therein and terminating below the upper portion of the setting in a manner to provide a communicating passage between said chambers adjacent their upper end portions, a plurality of hollow communicating fluid conducting baiiles positioned in said heating chamber in staggered overlapping relationship with respect to each other in a manner to orm a circuitous passage communicating at its upper end portion with the passage between said chambers and at its lower end portion with said sgack connection for conducting the gases of combustion in a downward direction through the heating chamber, the uppermost bai'le extending through said communicating passage into said combustion chamber at the top thereof, a fluid inlet pipe communicating with the lowermost hollow baille in said heating chainber adjacent saidstack connection, and an outlet pipe communicating with the portieri of the uppermost baille positioned in said combustion chamber.

In witness whereof, I hereunto subscribe my name this 19th day of February A. D.,

EDWARD C. KLINE. 

